diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-08-16 19:24:00 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-08-16 19:24:00 +0200 |
| commit | 031f5756aba3d07939a7eee6b2adf02f0a2d1d8d (patch) | |
| tree | 48cf891d5c7ee97b1c0a988334c7da7e2065ba41 /sys | |
| parent | 54becb84666114ce76457553fa3f707e4003d322 (diff) | |
bcm64: poll gisb arbiter for asynchronous bus errors
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/src/9/bcm64/gisb.c | 43 |
1 files changed, 33 insertions, 10 deletions
diff --git a/sys/src/9/bcm64/gisb.c b/sys/src/9/bcm64/gisb.c index 589ce0f82..fe0ab985f 100644 --- a/sys/src/9/bcm64/gisb.c +++ b/sys/src/9/bcm64/gisb.c @@ -12,52 +12,75 @@ static u32int *regs = (u32int*)(VIRTIO2 + 0x400000); enum { + ArbMasterMask = 0x004/4, ArbTimer = 0x008/4, + TimerFreq = 216000000, // 216MHz + ArbErrCapClear = 0x7e4/4, ArbErrCapAddrHi = 0x7e8/4, ArbErrCapAddr = 0x7ec/4, + ArbErrCapData = 0x7f0/4, ArbErrCapStatus = 0x7f4/4, CapStatusTimeout = 1<<12, CapStatusAbort = 1<<11, + CapStatusStrobe = 15<<2, CapStatusWrite = 1<<1, CapStatusValid = 1<<0, ArbErrCapMaster = 0x7f8/4, + + ArbIntrSts = 0x3000/4, + ArbIntrSet = 0x3004/4, + ArbIntrClr = 0x3008/4, + + ArbCpuMaskSet = 0x3010/4, }; static int -arbinterrupt(Ureg *) +arberror(Ureg*) { - u32int status = regs[ArbErrCapStatus]; - u32int master; + u32int status, intr; + u32int master, data; uvlong addr; + status = regs[ArbErrCapStatus]; if((status & CapStatusValid) == 0) return 0; - + intr = regs[ArbIntrSts]; master = regs[ArbErrCapMaster]; - addr = regs[ArbErrCapAddr]; addr |= (uvlong)regs[ArbErrCapAddrHi]<<32; - + data = regs[ArbErrCapData]; + if(intr) + regs[ArbIntrClr] = intr; regs[ArbErrCapClear] = CapStatusValid; - iprint("cpu%d: GISB arbiter error: %s%s %s bus addr %llux, master %.8ux\n", + iprint("cpu%d: GISB arbiter error: %s%s %s bus addr %llux data %.8ux, " + "master %.8ux, status %.8ux, intr %.8ux\n", m->machno, (status & CapStatusTimeout) ? "timeout" : "", (status & CapStatusAbort) ? "abort" : "", (status & CapStatusWrite) ? "writing" : "reading", - addr, - master); + addr, data, + master, status, intr); return 1; } +static void +arbclock(void) +{ + arberror(nil); +} + void gisblink(void) { extern int (*buserror)(Ureg*); // trap.c regs[ArbErrCapClear] = CapStatusValid; + regs[ArbIntrClr] = -1; + + addclock0link(arbclock, 100); - buserror = arbinterrupt; + buserror = arberror; } |